Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 3. West

Average Temperature Rankings, April 1975

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Record Coolest

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1975 1-Month	48.2°F (9.0°C)	51.3°F (10.7°C)	-3.1°F (-1.7°C)	19th Coolest	Coolest since: 1961	2018
April 1975 1-Month	48.2°F (9.0°C)	51.3°F (10.7°C)	-3.1°F (-1.7°C)	110th Warmest	Warmest since: 1974	2010
Mar–Apr 1975 2-Month	41.0°F (5.0°C)	45.2°F (7.3°C)	-4.2°F (-2.3°C)	9th Coolest	Coolest since: 1965	1960
	41.0°F (5.0°C)	45.2°F (7.3°C)	-4.2°F (-2.3°C)	120th Warmest	Warmest since: 1974	2012
	Ties: 1984
Feb–Apr 1975 3-Month	36.0°F (2.2°C)	39.5°F (4.2°C)	-3.5°F (-2.0°C)	15th Coolest	Coolest since: 1965	1899
	36.0°F (2.2°C)	39.5°F (4.2°C)	-3.5°F (-2.0°C)	114th Warmest	Warmest since: 1974	2012
	Ties: 1923, 1982
Jan–Apr 1975 4-Month	33.9°F (1.1°C)	35.6°F (2.0°C)	-1.7°F (-0.9°C)	33rd Coolest	Coolest since: 1970	1912
	33.9°F (1.1°C)	35.6°F (2.0°C)	-1.7°F (-0.9°C)	96th Warmest	Warmest since: 1974	2012
	Ties: 1929
Dec 1974–Apr 1975 5-Month	33.1°F (0.6°C)	34.2°F (1.2°C)	-1.1°F (-0.6°C)	36th Coolest	Coolest since: 1970	1978
	33.1°F (0.6°C)	34.2°F (1.2°C)	-1.1°F (-0.6°C)	92nd Warmest	Warmest since: 1974	2012
	Ties: 1958, 2011
Nov 1974–Apr 1975 6-Month	34.3°F (1.3°C)	35.2°F (1.8°C)	-0.9°F (-0.5°C)	37th Coolest	Coolest since: 1970	1904, 1912, 1978
	34.3°F (1.3°C)	35.2°F (1.8°C)	-0.9°F (-0.5°C)	91st Warmest	Warmest since: 1974	2012
	Ties: 1944, 1980, 1994
Oct 1974–Apr 1975 7-Month	37.2°F (2.9°C)	37.9°F (3.3°C)	-0.7°F (-0.4°C)	38th Coolest	Coolest since: 1970	1912
Oct 1974–Apr 1975 7-Month	37.2°F (2.9°C)	37.9°F (3.3°C)	-0.7°F (-0.4°C)	90th Warmest	Warmest since: 1974	2012
Sep 1974–Apr 1975 8-Month	40.1°F (4.5°C)	41.5°F (5.3°C)	-1.4°F (-0.8°C)	25th Coolest	Coolest since: 1970	1904, 1978
	40.1°F (4.5°C)	41.5°F (5.3°C)	-1.4°F (-0.8°C)	103rd Warmest	Warmest since: 1974	2017
	Ties: 1984, 1997
Aug 1974–Apr 1975 9-Month	43.5°F (6.4°C)	45.0°F (7.2°C)	-1.5°F (-0.8°C)	18th Coolest	Coolest since: 1970	1978
	43.5°F (6.4°C)	45.0°F (7.2°C)	-1.5°F (-0.8°C)	110th Warmest	Warmest since: 1974	2017
	Ties: 1962, 1996
Jul 1974–Apr 1975 10-Month	46.9°F (8.3°C)	48.1°F (8.9°C)	-1.2°F (-0.6°C)	24th Coolest	Coolest since: 1970	1904
	46.9°F (8.3°C)	48.1°F (8.9°C)	-1.2°F (-0.6°C)	104th Warmest	Warmest since: 1974	2012
	Ties: 1963, 1969
Jun 1974–Apr 1975 11-Month	48.7°F (9.3°C)	50.3°F (10.2°C)	-1.6°F (-0.9°C)	15th Coolest	Coolest since: 1970	1904
	48.7°F (9.3°C)	50.3°F (10.2°C)	-1.6°F (-0.9°C)	113th Warmest	Warmest since: 1974	2017
	Ties: 1962, 2015
May 1974–Apr 1975 12-Month	49.7°F (9.8°C)	51.3°F (10.7°C)	-1.6°F (-0.9°C)	17th Coolest	Coolest since: 1970	1918
	49.7°F (9.8°C)	51.3°F (10.7°C)	-1.6°F (-0.9°C)	111th Warmest	Warmest since: 1974	2017
	Ties: 1926
Nov 1973–Apr 1975 18-Month	45.3°F (7.4°C)	45.9°F (7.7°C)	-0.6°F (-0.3°C)	36th Coolest	Coolest since: 1971	1979
	45.3°F (7.4°C)	45.9°F (7.7°C)	-0.6°F (-0.3°C)	91st Warmest	Warmest since: 1974	2017
	Ties: 1926, 1927
May 1973–Apr 1975 24-Month	50.9°F (10.5°C)	51.2°F (10.7°C)	-0.3°F (-0.2°C)	38th Coolest	Coolest since: 1971	1905
	50.9°F (10.5°C)	51.2°F (10.7°C)	-0.3°F (-0.2°C)	89th Warmest	Warmest since: 1974	2017
	Ties: 1911, 1925, 1982, 1996
May 1972–Apr 1975 36-Month	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	45th Coolest	Coolest since: 1972	1979
	51.0°F (10.6°C)	51.2°F (10.7°C)	-0.2°F (-0.1°C)	81st Warmest	Warmest since: 1974	2018
	Ties: 1908, 1929, 1986, 2011
May 1971–Apr 1975 48-Month	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	45th Coolest	Coolest since: 1973	1980
	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	80th Warmest	Warmest since: 1974	1935
	Ties: 1909, 1914, 1921, 1951, 1959, 1983, 1995
May 1970–Apr 1975 60-Month	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	48th Coolest	Coolest since: 1974	1906, 1979
	51.1°F (10.6°C)	51.2°F (10.7°C)	-0.1°F (-0.1°C)	76th Warmest	Warmest since: 1974	1935
	Ties: 1911, 1914, 1947, 1974, 1984

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings